304542769 has 2 divisors, whose sum is σ = 304542770. Its totient is φ = 304542768.

The previous prime is 304542767. The next prime is 304542779. The reversal of 304542769 is 967245403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192182769 + 112360000 = 13863^2 + 10600^2 .

It is an emirp because it is prime and its reverse (967245403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 304542769 - 2¹ = 304542767 is a prime.

It is a super-2 number, since 2×304542769² = 185492596300374722, which contains 22 as substring.

Together with 304542767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (304542767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152271384 + 152271385.

It is an arithmetic number, because the mean of its divisors is an integer number (152271385).

Almost surely, 2^304542769 is an apocalyptic number.

It is an amenable number.

304542769 is a deficient number, since it is larger than the sum of its proper divisors (1).

304542769 is an equidigital number, since it uses as much as digits as its factorization.

304542769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 304542769 is about 17451.1538013966. The cubic root of 304542769 is about 672.7950136198.

The spelling of 304542769 in words is "three hundred four million, five hundred forty-two thousand, seven hundred sixty-nine".